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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /js/src/tests/non262/class/boundFunctionSubclassing.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/class/boundFunctionSubclassing.js')
-rw-r--r-- | js/src/tests/non262/class/boundFunctionSubclassing.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/non262/class/boundFunctionSubclassing.js b/js/src/tests/non262/class/boundFunctionSubclassing.js new file mode 100644 index 0000000000..be9058bb9e --- /dev/null +++ b/js/src/tests/non262/class/boundFunctionSubclassing.js @@ -0,0 +1,37 @@ +class func extends Function { } +let inst = new func("x", "return this.bar + x"); + +// First, ensure that we get sane prototype chains for the bound instance +let bound = inst.bind({bar: 3}, 4); +assertEq(bound instanceof func, true); +assertEq(bound(), 7); + +// Check the corner case for Function.prototype.bind where the function has +// a null [[Prototype]] +Object.setPrototypeOf(inst, null); +bound = Function.prototype.bind.call(inst, {bar:1}, 3); +assertEq(Object.getPrototypeOf(bound), null); +assertEq(bound(), 4); + +// Check that we actually pass the proper new.target when calling super() +function toBind() { } + +var boundArgs = []; +for (let i = 0; i < 5; i++) { + boundArgs.push(i); + let bound = toBind.bind(undefined, ...boundArgs); + + // We have to wire it up by hand to allow us to use a bound function + // as a superclass, but it's doable. + bound.prototype = {}; + class test extends bound { }; + let passedArgs = []; + for (let j = 0; j < 15; j++) { + passedArgs.push(j); + assertEq(Object.getPrototypeOf(new test(...passedArgs)), test.prototype); + } +} + + +if (typeof reportCompare === 'function') + reportCompare(0,0,"OK"); |